CN108268898A - A kind of electronic invoice user clustering method based on K-Means - Google Patents

A kind of electronic invoice user clustering method based on K-Means Download PDF

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CN108268898A
CN108268898A CN201810057864.5A CN201810057864A CN108268898A CN 108268898 A CN108268898 A CN 108268898A CN 201810057864 A CN201810057864 A CN 201810057864A CN 108268898 A CN108268898 A CN 108268898A
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electronic invoice
vector
behavior data
data
consumer
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尤培海
李泽然
张泽
白光佩
潘黛
李蓓
包印
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Elephant Hui Yun Information Technology Co Ltd
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    • GPHYSICS
    • G06COMPUTING; CALCULATING OR COUNTING
    • G06FELECTRIC DIGITAL DATA PROCESSING
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    • G06F18/23213Non-hierarchical techniques using statistics or function optimisation, e.g. modelling of probability density functions with fixed number of clusters, e.g. K-means clustering
    • GPHYSICS
    • G06COMPUTING; CALCULATING OR COUNTING
    • G06FELECTRIC DIGITAL DATA PROCESSING
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    • G06F18/24Classification techniques
    • G06F18/241Classification techniques relating to the classification model, e.g. parametric or non-parametric approaches
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Abstract

The present invention provides a kind of electronic invoice user clustering method based on K Means, including:It establishes electronic invoice consumer consumption behavior data clusters model and realizes electronic invoice consumer consumption behavior data matching method.Clustering Model method for building up includes:The consumer behavior data for choosing M electronic invoice user are sample data, establish the index series of electronic invoice consumer consumption behavior data clusters model, the indicator vector of sample data is calculated using big data technology, utilize the central point of K Means algorithms parameter vectors, obtain the feature vector of sample data namely the feature vector of Clustering Model.Electronic invoice consumer consumption behavior data matching method includes:Feature vector in the indicator vector and Clustering Model of example to be sorted is compared, obtain with the immediate feature vector V of example to be sorted, then example to be sorted belong to the corresponding electronic invoice users of V consumer behavior data classification.

Description

A kind of electronic invoice user clustering method based on K-Means
Technical field
The present invention relates to a kind of electronic invoice user clustering methods based on K-Means.
Background technology
In order to improve marketing operational effect, promoting team needs to find accurately electronic invoice user crowd, according to difference The different characteristics of user crowd targetedly matches corresponding marketing program.Electronic invoice ticket information includes the consumption of user Behavioral data is modeled by mathematical algorithm, is extracted consumer consumption behavior feature, is divided group so as to carry out user clustering, for difference The user of feature carries out differentiation precision marketing operation and is of great significance.In sorting algorithm, K-Means algorithms are a kind of bases In the Classic Clustering Algorithms of division methods, have and illegal vehicle in use identification is carried out based on this algorithm, achieve higher discrimination.
At present, the data dimension that group is divided to consider in traditional business for electronic invoice user is single, and user distinguishes effect Difference, it is difficult to support the demand of precision marketing operation.
Invention content
In order to solve the above technical problem, the present invention provides a kind of electronic invoice user clustering sides based on K-Means Method when carrying out precision marketing operation for electronic invoice user mainly for solution, can not divide group to screen asking for particular group Topic.
A kind of electronic invoice user clustering method based on K-Means, including:Based on the electronic invoice customer consumption row To establish the electronic invoice consumer consumption behavior data clusters model;Gather using the electronic invoice consumer consumption behavior data Class model realizes the electronic invoice consumer consumption behavior Data Matching, and the electronic invoice consumer consumption behavior is gathered Class.
Further, electronic invoice consumer consumption behavior data clusters model is established, including:Choose M (M > 1) electronics The consumer behavior data of invoice user are sample data;Establish the index sequence of electronic invoice consumer consumption behavior data clusters model It arranges, the index number in index series is N (N >=1);Index in index series calculates sample using big data technology The indicator vector of data, the consumer behavior data of each electronic invoice user obtain an indicator vector;Utilize K-Means algorithms The central point of parameter vector, obtains the feature vector of sample data, and the feature vector of each corresponds to a kind of electronic invoice The consumer behavior data classification of user;The feature vector of sample data forms electronic invoice consumer consumption behavior data clusters mould Type.
Further, electronic invoice consumer consumption behavior data matching method is realized, including:Choose any one electronics hair The consumer behavior data of ticket user are as example to be sorted;According to the index of electronic invoice consumer consumption behavior data clusters model Sequence calculates the indicator vector of example to be sorted;Feature vector in the indicator vector and Clustering Model of example to be sorted carries out Comparison, obtain with the immediate feature vector V of example to be sorted, then example to be sorted belong to the corresponding electronic invoice users' of V Consumer behavior data are classified.
Further, the choosing method of sample data includes:Made using all electronic invoice consumer consumption behavior data For sample data, it is random or according to certain regular selected part electronic invoice consumer consumption behavior data as sample number According to.
Further, the index in index series includes primary attribute, consumption attribute and liveness attribute;Primary attribute packet Include gender, age and city rank;It consumes attribute and includes purchasing power, classification preference and Brang Preference;Liveness attribute includes the moon Liveness, year liveness and active period.
Further, the method that the indicator vector of sample data is calculated using big data technology is included:To sample data into Row cleaning and stipulations form preprocessed data vector, and carrying out z-score to preprocessed data vector standardizes to obtain sample data Indicator vector.
Further, included using the method for the central point of K-Means algorithms parameter vector:
S1:K indicator vector is randomly selected from M indicator vector as initial center point, wherein M > K, and K > 1;
S2:To remaining (M-K) a indicator vector, each indicator vector is calculated to the distance of K initial center point, is referred to The distance of mark vector to which initial center point is minimum, then indicator vector is divided to the corresponding classification of initial center point;
S3:Indicator vector is divided into K classification, calculates the central point each classified;
S4:Iteration carries out the calculating in S2 and S3, until the central point of K classification and the last K classification calculated The equal or distance of central point is less than defined threshold value, then terminates interative computation;
The central point of K classification namely the central point of indicator vector that final operation obtains, what central point was classified for K Feature vector.
Further, the feature vector of K classification is N-dimensional vector, and K N-dimensional vector forms electronic invoice customer consumption Behavioral data Clustering Model.
Further, the method packet that the feature vector in the indicator vector and Clustering Model of example to be sorted is compared It includes:The distance of all feature vectors in the indicator vector and Clustering Model of example to be sorted is calculated, wherein being apart from reckling With the immediate feature vector V of example to be sorted.
The invention has the advantages that the consumer behavior data by extracting user from user's electronic invoice ticket information, Introduce electronic invoice user gender, age, city rank, purchasing power, preference classification, active period, moon liveness, year liveness Deng the composite factor for influencing consumer consumption behavior, structure influences the overall target sequence of consumer consumption behavior, in order to eliminate each finger The difference of dimension, is standardized index between mark, using the index value after each criterion as N-dimensional vector, utilizes K- MEANS clustering algorithms iterate to calculate out the central point of user Suo Fen groups, so as to fulfill to classifying and dividing users group, to carry out Precision marketing operation provides support.
Description of the drawings
It, below will be to specific in order to illustrate more clearly of the specific embodiment of the invention or technical solution of the prior art Embodiment or attached drawing needed to be used in the description of the prior art are briefly described, it should be apparent that, in being described below Attached drawing is some embodiments of the present invention, for those of ordinary skill in the art, before not making the creative labor It puts, can also be obtained according to these attached drawings other attached drawings.
Fig. 1 is the techniqueflow chart that the present invention is implemented;
Fig. 2 is the electronic invoice consumer consumption behavior data target sequence of the present invention;
Specific embodiment
Purpose, technical scheme and advantage to make the embodiment of the present invention are clearer, below in conjunction with attached drawing to the present invention Technical solution be clearly and completely described, described embodiment be part of the embodiment of the present invention rather than whole Embodiment.
Fig. 1 is the techniqueflow chart implemented according to the present invention, as shown in Figure 1, this method comprises the following steps:
Step S101, the consumer behavior data for choosing M electronic invoice user are sample data;
As the selection of sample data, currently existing all electronic invoice consumer consumption behavior data can be selected to make For sample data, subsequently calculated.In an alternate embodiment of the invention, it can be sent out in the way of random sampling from all electronics Ticket consumer consumption behavior data selecting section divided data is as sample data.It, can also be according in another optional embodiment Certain rule chooses sample data, such as rejects that information is imperfect, data of information fuzzy are as sample data.
Step S102 establishes the index series of electronic invoice consumer consumption behavior data clusters model;
Index in index series includes primary attribute, consumption attribute and liveness attribute;Primary attribute includes gender, year Age and city rank;It consumes attribute and includes purchasing power, classification preference and Brang Preference;Liveness attribute includes moon liveness, year Liveness and active period.Therefore in the present embodiment, index number is 9 in index series, i.e. N=9.
The calculating of each index is from electronic invoice user's registration information, electronic invoice ticket face data, user's statistical data. Such as electronic invoice ticket face data includes:Tax-controlling machine number, purchaser's information, cargo or service name, are received seller information The information such as money people, drawer, invoice codes, invoice number, date of making out an invoice, Amount in Total, the tax rate.
Step S103 calculates the indicator vector of the sample data using big data technology;
Using the preconditioning technique of big data, sample data is cleaned and stipulations form preprocessed data vector. In practice, the data complexity of nominal value is various, such as all spending amounts and deduction amount of money situation can be listed in nominal value by part businessman On, Amount in Total subtracts the numerical value after the deduction amount of money for spending amount, and real consumption product include multiple types, at this moment It needs single invoice splitting into multiple ticket face datas and goes to handle, data after treatment form the data target of pretreatment Vector carries out z-score to the indicator vector of pretreatment and standardizes to obtain the indicator vector P of sample datai, wherein (i= 1......M)。
Step S104 utilizes the central point of K-Means algorithms parameter vector;
1) K indicator vector is randomly selected from M indicator vector as initial center point, the usual M in engineering practice K can be much larger than, the size of K depends on the categorical measure of data clusters, and K is smaller, and the classification divided is fewer, and the K the big, divides Classification is bigger.
2) to remaining (M-K) a indicator vector, each indicator vector is calculated to the distance of K initial center point, is referred to The distance of mark vector to which initial center point is minimum, then indicator vector is divided to the corresponding classification of initial center point;
3) indicator vector is divided into K classification, calculates the central point each classified;
2) and 3) 4) calculating during iteration carries out, until during the central point of K classification is classified with last K calculated The equal or distance of heart point is less than defined threshold value, then terminates interative computation;
The central point of K classification namely the feature vector Q of sample data finally obtainedi, wherein (i=1.....K), The feature vector of each corresponds to the consumer behavior data classification of electronic invoice user a kind of, and the feature vector of sample data is formed Electronic invoice consumer consumption behavior data clusters model.
Step S105, the feature vector comparison in the indicator vector and Clustering Model of example to be sorted, obtains calculation to be sorted Classification belonging to example;
For the Clustering Model formed, judge which classification the consumer behavior of a certain electronic invoice user belongs to, Computational methods are:By the consumer behavior data of the user, that is, example to be sorted, gathered according to electronic invoice consumer consumption behavior data The index series of class model calculates the indicator vector R of example to be sorted, calculates R to the feature vector Q of sample dataiDistance. The classification that wherein the feature vector V minimum with R distances is represented, the classification belonging to example as to be sorted.

Claims (9)

  1. A kind of 1. electronic invoice user clustering method based on K-Means, which is characterized in that including:
    Electronic invoice consumer consumption behavior data clusters model is established based on electronic invoice consumer consumption behavior;
    Using electronic invoice consumer consumption behavior data described in the electronic invoice consumer consumption behavior data clusters model realization Matching, clusters the electronic invoice consumer consumption behavior.
  2. 2. according to the method described in claim 1, it is characterized in that, establish the electronic invoice consumer consumption behavior data clusters Model, including:
    The consumer behavior data for choosing M electronic invoice users are sample data, wherein M > 1;
    Establish the index series of the electronic invoice consumer consumption behavior data clusters model, the index in the index series It counts as N, N >=1;
    According to the index in the index series, the indicator vector of the sample data, Mei Gesuo are calculated using big data technology The consumer behavior data for stating electronic invoice user obtain an indicator vector;
    The central point of the indicator vector is calculated using K-Means algorithms, obtains the feature vector of the sample data, each The feature vector corresponds to the consumer behavior data classification of electronic invoice user a kind of;
    The feature vector of the sample data forms the electronic invoice consumer consumption behavior data clusters model.
  3. 3. according to the method described in claim 1, it is characterized in that, realize the electronic invoice consumer consumption behavior Data Matching Method, including:
    The consumer behavior data of any one of electronic invoice user are chosen as example to be sorted;
    According to the index series of the electronic invoice consumer consumption behavior data clusters model, the finger of the example to be sorted is calculated Mark vector;
    The indicator vector of the example to be sorted is compared with the feature vector in the Clustering Model, obtains treating point with described The immediate described eigenvector V of class example, then the example to be sorted belong to the consumption of the corresponding electronic invoice users of V Behavioral data is classified.
  4. 4. according to the method described in claim 2, it is characterized in that, the choosing method of the sample data includes:
    Using all electronic invoice consumer consumption behavior data as the sample data, at random or according to certain Electronic invoice consumer consumption behavior data are as sample data described in regular selected part.
  5. 5. according to the method described in claim 2, it is characterized in that, the index in the index series includes primary attribute, disappears Take attribute and liveness attribute;The primary attribute includes gender, age and city rank;The consumption attribute includes purchase Power, classification preference and Brang Preference;The liveness attribute includes moon liveness, year liveness and active period.
  6. 6. according to the method described in claim 2, it is characterized in that, described calculate the sample data using big data technology The method of indicator vector includes:The sample data is cleaned and stipulations form preprocessed data vector, to the pre- place Reason data vector carries out z-score and standardizes to obtain the indicator vector of the sample data.
  7. 7. according to the method described in claim 2, it is characterized in that, described calculate the indicator vector using K-Means algorithms The method of central point include:
    S1:The K indicator vectors are randomly selected from the M indicator vectors as initial center point, wherein M > K, and K > 1;
    S2:To remaining (M-K) a indicator vector, each described indicator vector is calculated to the K initial center points Distance, the distance of the indicator vector to initial center point which described is minimum, then the indicator vector is divided to institute State the corresponding classification of initial center point;
    S3:The indicator vector is divided into K classification, calculates the central point of each classification;
    S4:Iteration carries out the calculating in S2 and S3, until the K points that the central point of described K classification is calculated with the last time The equal or distance of the central point of class is less than defined threshold value, then terminates interative computation;
    The central point of the K classification namely the central point of the indicator vector that final operation obtains, the central point is K The described eigenvector of a classification.
  8. 8. the method according to the description of claim 7 is characterized in that the described eigenvector of K classification is N-dimensional vector, K is a The N-dimensional vector forms the electronic invoice consumer consumption behavior data clusters model.
  9. 9. according to the method described in claim 3, it is characterized in that, the indicator vector of the example to be sorted and the cluster mould The method that feature vector in type is compared includes:In the indicator vector and the Clustering Model that calculate the example to be sorted All feature vectors distance, wherein apart from reckling be and the immediate described eigenvector V of example to be sorted.
CN201810057864.5A 2018-01-19 2018-01-19 A kind of electronic invoice user clustering method based on K-Means Pending CN108268898A (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109299259A (en) * 2018-09-26 2019-02-01 深圳壹账通智能科技有限公司 Enterprise's invoice data monitoring method, device, computer equipment and storage medium
CN111191713A (en) * 2019-12-27 2020-05-22 大象慧云信息技术有限公司 User portrait method and device based on invoice data

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20020135474A1 (en) * 2001-03-21 2002-09-26 Sylliassen Douglas G. Method and device for sensor-based power management of a consumer electronic device
CN104899602A (en) * 2015-06-03 2015-09-09 江苏马上游科技股份有限公司 User cluster analysis system based on K-means algorithm
CN105844302A (en) * 2016-04-07 2016-08-10 南京新与力文化传播有限公司 Depth-learning-based method for automatically calculating commodity trend indexes
CN105931068A (en) * 2015-12-30 2016-09-07 中国银联股份有限公司 Cardholder consumption figure generation method and device
CN106021376A (en) * 2016-05-11 2016-10-12 上海点荣金融信息服务有限责任公司 Method and device for processing user information
CN106127493A (en) * 2016-06-23 2016-11-16 深圳大学 A kind of method and device analyzing customer transaction behavior
CN106548255A (en) * 2016-11-24 2017-03-29 山东浪潮云服务信息科技有限公司 A kind of Method of Commodity Recommendation based on mass users behavior
CN107220856A (en) * 2017-06-02 2017-09-29 武汉大学 A kind of system and method for mobile consumption group identification
CN206610379U (en) * 2017-03-06 2017-11-03 中国—东盟信息港股份有限公司 A kind of ecommerce shopping guide purchasing article

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20020135474A1 (en) * 2001-03-21 2002-09-26 Sylliassen Douglas G. Method and device for sensor-based power management of a consumer electronic device
CN104899602A (en) * 2015-06-03 2015-09-09 江苏马上游科技股份有限公司 User cluster analysis system based on K-means algorithm
CN105931068A (en) * 2015-12-30 2016-09-07 中国银联股份有限公司 Cardholder consumption figure generation method and device
CN105844302A (en) * 2016-04-07 2016-08-10 南京新与力文化传播有限公司 Depth-learning-based method for automatically calculating commodity trend indexes
CN106021376A (en) * 2016-05-11 2016-10-12 上海点荣金融信息服务有限责任公司 Method and device for processing user information
CN106127493A (en) * 2016-06-23 2016-11-16 深圳大学 A kind of method and device analyzing customer transaction behavior
CN106548255A (en) * 2016-11-24 2017-03-29 山东浪潮云服务信息科技有限公司 A kind of Method of Commodity Recommendation based on mass users behavior
CN206610379U (en) * 2017-03-06 2017-11-03 中国—东盟信息港股份有限公司 A kind of ecommerce shopping guide purchasing article
CN107220856A (en) * 2017-06-02 2017-09-29 武汉大学 A kind of system and method for mobile consumption group identification

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
宋军: "基于大数据分析的客户维系支撑系统建设和应用", 《现代电信科技》 *

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109299259A (en) * 2018-09-26 2019-02-01 深圳壹账通智能科技有限公司 Enterprise's invoice data monitoring method, device, computer equipment and storage medium
WO2020062702A1 (en) * 2018-09-26 2020-04-02 深圳壹账通智能科技有限公司 Method and device for sending text messages, computer device and storage medium
CN111191713A (en) * 2019-12-27 2020-05-22 大象慧云信息技术有限公司 User portrait method and device based on invoice data

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